답안 #677705

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
677705	2023-01-04T08:00:09 Z	bashkort	고대 책들 (IOI17_books)	C++17	100 / 100	188 ms	26728 KB

books

#include <bits/stdc++.h>
#include "books.h"

using namespace std;
using ll = long long;

long long minimum_walk(std::vector<int> p, int s) {
    if (is_sorted(p.begin(), p.end())) {
        return 0;
    }

    int n = p.size();

    ll ans = 0;

    vector<int> inv(n);
    for (int i = 0; i < n; ++i) {
        inv[p[i]] = i;

        ans += abs(p[i] - i);
    }

    vector<int> lx(n, -1), rx(n, -1);
    for (int i = 0; i < n; ++i) {
        if (lx[i] == -1) {
            int v = i, mn = n, mx = 0;

            vector<int> cycle;
            do {
                mn = min(mn, v);
                mx = max(mx, v);

                lx[v] = 228;
                cycle.push_back(v);

                v = p[v];
            } while (lx[v] == -1);

            for (int x: cycle) {
                lx[x] = mn, rx[x] = mx;
            }
        }
    }

    auto extend = [&](int &l, int &r, int limL, int limR) {
        int mn = l, mx = r;
        for (int i = l; i <= limL; ++i) {
            mn = min(mn, lx[i]);
            mx = max(mx, rx[i]);
        }
        for (int i = limR; i <= r; ++i) {
            mn = min(mn, lx[i]);
            mx = max(mx, rx[i]);
        }
        l = mn, r = mx;
    };

    int trivL = 0, trivR = n - 1;
    while (p[trivL] == trivL) {
        trivL += 1;
    }
    while (p[trivR] == trivR) {
        trivR -= 1;
    }

    int l = lx[s], r = rx[s];
    extend(l, r, s, s);
    while (l >= 0 && r < n) {
        int cl = l, cr = r;

        int ansL = 0, ansR = 0;
        int mn = n;

        bool found = false;
        while (cl > 0) {
            cl -= 1;
            if (mn > cl) {
                ansL += 1;
            }
            mn = min(mn, p[cl]);
            if (rx[cl] > r) {
                found = true;
                break;
            }
        }

        int mx = 0;

        while (cr < n - 1) {
            cr += 1;
            if (mx < cr) {
                ansR += 1;
            }
            mx = max(mx, p[cr]);
            if (lx[cr] < l) {
                found = true;
                break;
            }
        }

        if (!found) {
            if (trivL < l) {
                ans += (ansL - trivL) * 2;
            }
            if (trivR > r) {
                ans += (ansR - (n - trivR - 1)) * 2;
            }
            break;
        }

        ans += min(ansL, ansR) * 2;
        int pl = l, pr = r;
        l = min(lx[cl], lx[cr]);
        r = max(rx[cr], rx[cr]);
        extend(l, r, pl, pr);
    }

    return ans;
}

Subtask #1

12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	1 ms	212 KB	Output is correct
6	Correct	0 ms	212 KB	Output is correct
7	Correct	0 ms	212 KB	Output is correct
8	Correct	1 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	1 ms	212 KB	Output is correct
11	Correct	0 ms	212 KB	Output is correct
12	Correct	0 ms	212 KB	Output is correct
13	Correct	1 ms	212 KB	Output is correct
14	Correct	1 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	0 ms	212 KB	Output is correct
17	Correct	0 ms	212 KB	Output is correct
18	Correct	0 ms	212 KB	Output is correct

Subtask #2

10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	1 ms	212 KB	Output is correct
6	Correct	0 ms	212 KB	Output is correct
7	Correct	0 ms	212 KB	Output is correct
8	Correct	1 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	1 ms	212 KB	Output is correct
11	Correct	0 ms	212 KB	Output is correct
12	Correct	0 ms	212 KB	Output is correct
13	Correct	1 ms	212 KB	Output is correct
14	Correct	1 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	0 ms	212 KB	Output is correct
17	Correct	0 ms	212 KB	Output is correct
18	Correct	0 ms	212 KB	Output is correct
19	Correct	0 ms	212 KB	Output is correct
20	Correct	1 ms	212 KB	Output is correct
21	Correct	1 ms	212 KB	Output is correct
22	Correct	0 ms	212 KB	Output is correct
23	Correct	1 ms	212 KB	Output is correct
24	Correct	1 ms	212 KB	Output is correct
25	Correct	0 ms	212 KB	Output is correct
26	Correct	0 ms	212 KB	Output is correct
27	Correct	0 ms	212 KB	Output is correct
28	Correct	1 ms	212 KB	Output is correct
29	Correct	1 ms	212 KB	Output is correct

Subtask #3

28.0 / 28.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	1 ms	212 KB	Output is correct
6	Correct	0 ms	212 KB	Output is correct
7	Correct	0 ms	212 KB	Output is correct
8	Correct	1 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	1 ms	212 KB	Output is correct
11	Correct	0 ms	212 KB	Output is correct
12	Correct	0 ms	212 KB	Output is correct
13	Correct	1 ms	212 KB	Output is correct
14	Correct	1 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	0 ms	212 KB	Output is correct
17	Correct	0 ms	212 KB	Output is correct
18	Correct	0 ms	212 KB	Output is correct
19	Correct	0 ms	212 KB	Output is correct
20	Correct	1 ms	212 KB	Output is correct
21	Correct	1 ms	212 KB	Output is correct
22	Correct	0 ms	212 KB	Output is correct
23	Correct	1 ms	212 KB	Output is correct
24	Correct	1 ms	212 KB	Output is correct
25	Correct	0 ms	212 KB	Output is correct
26	Correct	0 ms	212 KB	Output is correct
27	Correct	0 ms	212 KB	Output is correct
28	Correct	1 ms	212 KB	Output is correct
29	Correct	1 ms	212 KB	Output is correct
30	Correct	181 ms	24036 KB	Output is correct
31	Correct	188 ms	21984 KB	Output is correct
32	Correct	84 ms	8048 KB	Output is correct
33	Correct	117 ms	19868 KB	Output is correct
34	Correct	120 ms	19864 KB	Output is correct
35	Correct	120 ms	19944 KB	Output is correct
36	Correct	116 ms	19820 KB	Output is correct
37	Correct	101 ms	19820 KB	Output is correct
38	Correct	115 ms	19832 KB	Output is correct
39	Correct	102 ms	19816 KB	Output is correct
40	Correct	107 ms	20144 KB	Output is correct
41	Correct	129 ms	22944 KB	Output is correct
42	Correct	126 ms	21452 KB	Output is correct
43	Correct	124 ms	19788 KB	Output is correct

Subtask #4

20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	1 ms	212 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	1 ms	212 KB	Output is correct
8	Correct	1 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	0 ms	212 KB	Output is correct
12	Correct	1 ms	212 KB	Output is correct
13	Correct	1 ms	212 KB	Output is correct
14	Correct	1 ms	212 KB	Output is correct
15	Correct	1 ms	212 KB	Output is correct
16	Correct	0 ms	212 KB	Output is correct
17	Correct	1 ms	212 KB	Output is correct
18	Correct	1 ms	212 KB	Output is correct
19	Correct	0 ms	212 KB	Output is correct
20	Correct	1 ms	212 KB	Output is correct

Subtask #5

30.0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	1 ms	212 KB	Output is correct
6	Correct	0 ms	212 KB	Output is correct
7	Correct	0 ms	212 KB	Output is correct
8	Correct	1 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	1 ms	212 KB	Output is correct
11	Correct	0 ms	212 KB	Output is correct
12	Correct	0 ms	212 KB	Output is correct
13	Correct	1 ms	212 KB	Output is correct
14	Correct	1 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	0 ms	212 KB	Output is correct
17	Correct	0 ms	212 KB	Output is correct
18	Correct	0 ms	212 KB	Output is correct
19	Correct	0 ms	212 KB	Output is correct
20	Correct	1 ms	212 KB	Output is correct
21	Correct	1 ms	212 KB	Output is correct
22	Correct	0 ms	212 KB	Output is correct
23	Correct	1 ms	212 KB	Output is correct
24	Correct	1 ms	212 KB	Output is correct
25	Correct	0 ms	212 KB	Output is correct
26	Correct	0 ms	212 KB	Output is correct
27	Correct	0 ms	212 KB	Output is correct
28	Correct	1 ms	212 KB	Output is correct
29	Correct	1 ms	212 KB	Output is correct
30	Correct	181 ms	24036 KB	Output is correct
31	Correct	188 ms	21984 KB	Output is correct
32	Correct	84 ms	8048 KB	Output is correct
33	Correct	117 ms	19868 KB	Output is correct
34	Correct	120 ms	19864 KB	Output is correct
35	Correct	120 ms	19944 KB	Output is correct
36	Correct	116 ms	19820 KB	Output is correct
37	Correct	101 ms	19820 KB	Output is correct
38	Correct	115 ms	19832 KB	Output is correct
39	Correct	102 ms	19816 KB	Output is correct
40	Correct	107 ms	20144 KB	Output is correct
41	Correct	129 ms	22944 KB	Output is correct
42	Correct	126 ms	21452 KB	Output is correct
43	Correct	124 ms	19788 KB	Output is correct
44	Correct	1 ms	212 KB	Output is correct
45	Correct	1 ms	212 KB	Output is correct
46	Correct	1 ms	212 KB	Output is correct
47	Correct	1 ms	212 KB	Output is correct
48	Correct	0 ms	212 KB	Output is correct
49	Correct	1 ms	212 KB	Output is correct
50	Correct	1 ms	212 KB	Output is correct
51	Correct	1 ms	212 KB	Output is correct
52	Correct	0 ms	212 KB	Output is correct
53	Correct	0 ms	212 KB	Output is correct
54	Correct	0 ms	212 KB	Output is correct
55	Correct	1 ms	212 KB	Output is correct
56	Correct	1 ms	212 KB	Output is correct
57	Correct	1 ms	212 KB	Output is correct
58	Correct	1 ms	212 KB	Output is correct
59	Correct	0 ms	212 KB	Output is correct
60	Correct	1 ms	212 KB	Output is correct
61	Correct	1 ms	212 KB	Output is correct
62	Correct	0 ms	212 KB	Output is correct
63	Correct	1 ms	212 KB	Output is correct
64	Correct	121 ms	19836 KB	Output is correct
65	Correct	119 ms	19816 KB	Output is correct
66	Correct	105 ms	19820 KB	Output is correct
67	Correct	105 ms	19904 KB	Output is correct
68	Correct	13 ms	2232 KB	Output is correct
69	Correct	11 ms	2260 KB	Output is correct
70	Correct	11 ms	2260 KB	Output is correct
71	Correct	12 ms	2260 KB	Output is correct
72	Correct	12 ms	2260 KB	Output is correct
73	Correct	14 ms	2268 KB	Output is correct
74	Correct	158 ms	19836 KB	Output is correct
75	Correct	124 ms	19828 KB	Output is correct
76	Correct	130 ms	19948 KB	Output is correct
77	Correct	121 ms	19832 KB	Output is correct
78	Correct	144 ms	19788 KB	Output is correct
79	Correct	123 ms	19820 KB	Output is correct
80	Correct	83 ms	8048 KB	Output is correct
81	Correct	116 ms	19872 KB	Output is correct
82	Correct	136 ms	26592 KB	Output is correct
83	Correct	125 ms	26728 KB	Output is correct
84	Correct	130 ms	26608 KB	Output is correct
85	Correct	141 ms	26708 KB	Output is correct
86	Correct	109 ms	26604 KB	Output is correct
87	Correct	125 ms	26604 KB	Output is correct
88	Correct	151 ms	26604 KB	Output is correct
89	Correct	127 ms	26596 KB	Output is correct
90	Correct	105 ms	26596 KB	Output is correct
91	Correct	116 ms	26592 KB	Output is correct
92	Correct	123 ms	26724 KB	Output is correct